Linkage Between Radar Reflectivity Slope and Raindrop Size Distribution in Precipitation with Bright Bands.
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| Title: | Linkage Between Radar Reflectivity Slope and Raindrop Size Distribution in Precipitation with Bright Bands. |
|---|---|
| Authors: | Li, Qinghui1 (AUTHOR), Sun, Xuejin1,2 (AUTHOR) xuejin.s@nudt.edu.cn, Liu, Xichuan1 (AUTHOR), Li, Haoran2 (AUTHOR) |
| Source: | Remote Sensing. Jul2025, Vol. 17 Issue 14, p2393. 15p. |
| Subjects: | Raindrop size, Microphysics, Meteorological precipitation, Radar, Reflectance measurement |
| Geographic Terms: | China |
| Abstract: | This study investigates the linkage between the radar reflectivity slope and raindrop size distribution (DSD) in precipitation with bright bands through coordinated C-band/Ka-band radar and disdrometer observations in southern China. Precipitation is classified into three types based on the reflectivity slope (K-value) below the freezing level, revealing distinct microphysical regimes: Type 1 (K = 0 to −0.9) shows coalescence-dominated growth; Type 2 (|K| > 0.9) shows the balance between coalescence and evaporation/size sorting; and Type 3 (K = 0.9 to 0) demonstrates evaporation/size-sorting effects. Surface DSD analysis demonstrates distinct precipitation characteristics across classification types. Type 3 has the highest frequency of occurrence. A gradual decrease in the mean rain rates is observed from Type 1 to Type 3, with Type 3 exhibiting significantly lower rainfall intensities compared to Type 1. At equivalent rainfall rates, Type 2 exhibits unique microphysical signatures with larger mass-weighted mean diameters (Dm) compared to other types. These differences are due to Type 2 maintaining a high relative humidity above the freezing level (influencing initial Dm at bottom of melting layer) but experiencing limited Dm growth due to a dry warm rain layer and downdrafts. Type 1 shows opposite characteristics—a low initial Dm from the dry upper layers but maximum growth through the moist warm rain layer and updrafts. Type 3 features intermediate humidity throughout the column with updrafts and downdrafts coexisting in the warm rain layer, producing moderate growth. [ABSTRACT FROM AUTHOR] |
| Copyright of Remote Sensing is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 186930982 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Linkage Between Radar Reflectivity Slope and Raindrop Size Distribution in Precipitation with Bright Bands. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Li%2C+Qinghui%22">Li, Qinghui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sun%2C+Xuejin%22">Sun, Xuejin</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> xuejin.s@nudt.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Liu%2C+Xichuan%22">Liu, Xichuan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Haoran%22">Li, Haoran</searchLink><relatesTo>2</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Remote+Sensing%22">Remote Sensing</searchLink>. Jul2025, Vol. 17 Issue 14, p2393. 15p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Raindrop+size%22">Raindrop size</searchLink><br /><searchLink fieldCode="DE" term="%22Microphysics%22">Microphysics</searchLink><br /><searchLink fieldCode="DE" term="%22Meteorological+precipitation%22">Meteorological precipitation</searchLink><br /><searchLink fieldCode="DE" term="%22Radar%22">Radar</searchLink><br /><searchLink fieldCode="DE" term="%22Reflectance+measurement%22">Reflectance measurement</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22China%22">China</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This study investigates the linkage between the radar reflectivity slope and raindrop size distribution (DSD) in precipitation with bright bands through coordinated C-band/Ka-band radar and disdrometer observations in southern China. Precipitation is classified into three types based on the reflectivity slope (K-value) below the freezing level, revealing distinct microphysical regimes: Type 1 (K = 0 to −0.9) shows coalescence-dominated growth; Type 2 (|K| > 0.9) shows the balance between coalescence and evaporation/size sorting; and Type 3 (K = 0.9 to 0) demonstrates evaporation/size-sorting effects. Surface DSD analysis demonstrates distinct precipitation characteristics across classification types. Type 3 has the highest frequency of occurrence. A gradual decrease in the mean rain rates is observed from Type 1 to Type 3, with Type 3 exhibiting significantly lower rainfall intensities compared to Type 1. At equivalent rainfall rates, Type 2 exhibits unique microphysical signatures with larger mass-weighted mean diameters (Dm) compared to other types. These differences are due to Type 2 maintaining a high relative humidity above the freezing level (influencing initial Dm at bottom of melting layer) but experiencing limited Dm growth due to a dry warm rain layer and downdrafts. Type 1 shows opposite characteristics—a low initial Dm from the dry upper layers but maximum growth through the moist warm rain layer and updrafts. Type 3 features intermediate humidity throughout the column with updrafts and downdrafts coexisting in the warm rain layer, producing moderate growth. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Remote Sensing is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/rs17142393 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 15 StartPage: 2393 Subjects: – SubjectFull: Raindrop size Type: general – SubjectFull: Microphysics Type: general – SubjectFull: Meteorological precipitation Type: general – SubjectFull: Radar Type: general – SubjectFull: Reflectance measurement Type: general – SubjectFull: China Type: general Titles: – TitleFull: Linkage Between Radar Reflectivity Slope and Raindrop Size Distribution in Precipitation with Bright Bands. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Li, Qinghui – PersonEntity: Name: NameFull: Sun, Xuejin – PersonEntity: Name: NameFull: Liu, Xichuan – PersonEntity: Name: NameFull: Li, Haoran IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 07 Text: Jul2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 20724292 Numbering: – Type: volume Value: 17 – Type: issue Value: 14 Titles: – TitleFull: Remote Sensing Type: main |
| ResultId | 1 |
